The Constellation Observing System for Meteorology, Ionosphere, and Climate COSMIC) is a set of satellites launched in 2006 that orbit the earth about 500 miles above ground. They use radio signals from Global Positioning System (GPS) satellites in a process called “radio occultation” to accurately measure temperature and moisture at a large number of points in […]
This is a companion paper to the one on Hurricane Patricia. You can read this paper at http://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-16-0055.1.
It has been believed that tropical cyclones are likely to strengthen when strong thunderstorms (called convection) almost completely surround the storm’s center. In order to better understand what prevents this convection from surrounding the storm’s center in some storms (but not others), this study analyzes data collected on NOAA aircraft flights in two storms that […]
In the early morning hours of August 24, 1992, Category-Five Hurricane Andrew roared across southern Florida leaving behind a trail of devastation that stunned the nation. Andrew was the first hurricane of this ferocity to hit the continental United States since Hurricane Camille in 1969, and repercussions of its landfall were felt in the world […]
Summary: When tropical cyclones move out of the tropics toward the poles, they reach areas where fronts exist and where the ocean, whose warm water fuels tropical storms, is relatively cool. When this happens, the storms go through extratropical transition (ET) and become like other storms in the mid latitudes. The storms can cause catastrophic […]
Summary: Sometimes, the wind at the surface around a hurricane is the same around the storm center (what we call a symmetric pattern), and at other times, it is different (what we call an asymmetric pattern). In addition, sometimes the wind pattern stays the same, and sometimes it changes quickly. This study looks at how […]
Summary: Hurricane Hunter aircraft have been releasing instruments called dropwindsondes to measure pressure, temperature, moisture, and wind speed and direction in hurricanes for two decades. Data from dropwindsondes released near the storms have led to better forecasts of where they will go, but improvements to forecasts of how strong they will get have lagged. Part […]
In July of 1967, as part of a reorganization of the National Hurricane Center (NHC), the Tropical Analysis Center, predecessor of the Tropical Analysis and Forecast Branch (TAFB), was formed. This reorganization, overseen by Dr. Bob Simpson who was scheduled to become NHC director the next year, also separated NHC from the Miami Weather Bureau […]
You can read the paper at http://journals.ametsoc.org/doi/abs/10.1175/JTECH-D-16-0140.1.
Summary: Scatterometers are instruments on aircraft or satellites that are used to measure wind speed and direction at the ocean surface. In this follow-up to a 2016 study, the surface wind in tropical cyclones around the world are studied using a large set of measurements from 2000 to 2011. The impact of tropical cyclone intensity, […]